class Reline::LineEditor::MenuInfo
Attributes
list
[R]
Public Class Methods
new
(list)
# File lib/reline/line_editor.rb, line 53 def initialize(list) @list = list end
Public Instance Methods
lines
(screen_width)
# File lib/reline/line_editor.rb, line 57 def lines(screen_width) return [] if @list.empty? list = @list.sort sizes = list.map { |item| Reline::Unicode.calculate_width(item) } item_width = sizes.max + 2 num_cols = [screen_width / item_width, 1].max num_rows = list.size.fdiv(num_cols).ceil list_with_padding = list.zip(sizes).map { |item, size| item + ' ' * (item_width - size) } aligned = (list_with_padding + [nil] * (num_rows * num_cols - list_with_padding.size)).each_slice(num_rows).to_a.transpose aligned.map do |row| row.join.rstrip end end